Trolley-head.



' No. 758,445. PATENTED APR. V26. 1904.

P. D. HEAN & J. J. EGAN.

TROLLEY HEAD.

APPLIOATION FILED DBO. 26. 1903.

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PATBNTBD APR. 26, 1904. P. D. HBAN.& J.. JQEGAN. 4

" TROLLEY HEAD.

APPLICATION FILED DEO. 26. 1903. N0 MODEL. i 2 SHEETS-SHEBT`2.

UNITED STATES PATENT OEEICE.v

Patented April 26, 1904. I

PETER DUFFl HEAN AND JOHNy J. lEG'rAN, OF MEDIA,`PEN NSYLVANIA.

TROLLEY-HEAD.

SPECIFICATION fqrmingpart of Lettere patent N. 758,445, dated April 26,1904. v

Application filed Decemlner 26, 1903. Serial No. 186,657. (No model.) I

full, clear, and exact description of the invention,such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompany-i ing drawings, and to the'letters of Areference. marked thereon, which form.v apart of thisspecification.

provements in trolleys for overhead electric@ vrailways; and the object;of the invention is to produce. means whereby the sheave or trolleywheelmay be prevented from jumping from l the trolley-line and. in vtheprovision of mechanism for automatically throwing guard-arms to relievethe trolley-wheel from the line-wire' in case an V.obstruction is metwith upon the wire. l

More specifically, our` invention comprises the provision of guardmembers which are car-l rie'd by the casting 4which holds 'the trolley-gwheel and designed to normallymaintain the trolley-wheel in engagementwith the linewire and in the provision of spring-actuated apparatuswhereby the guard-arms maybe, thrown into such positions as to allowthe: wheel to be withdrawn from the line-wire;E also, in the provisionof a triplever so arranged that any obstructionupon the line-v wire willactuate the trip to throw the guard members into position to allow thetrolleywheel to be thrown from the line-wire before the obstructioncomes in contact with the trolley wheel or pole.

Our invention consists, further, in various features and details ofconstruction, together with combinations of parts, which will behereinafter fully described and thenspecilically defined in the appendedclaims.-

' ters of reference indicate like parts in the Be it known that we,PETER DUEE HEAN, a subject of the King of Great Britain, and JOHN; -J.EGAN, a citizen of the United States, residing at Media, in the countyof Delaware and., State lof Pennsylvania, have Ainvented certain new anduseful Improvements in .Trolley-` Heads; and we do declare the followingto be a;

views, in which,-

Figure 1 is a side elevation, partlyin sec-l of guard operatingmechanism. Fig. 7 is a sectional view of the modified form. i

Reference now being had to the details of the drawings by letter, Adesignates/a trolley- This invention relates to new and-usefulimpolecarrying a trolley-head A' made of any suitable material, and carrying apin B, upon which a trolley-wheel or sheaveCis journaled in the usualmanner. Integral with or secured to the trolley-head are the.. tubingsD,which rise from the plate a, which is integral with or secured to thetrolley-head, in which thel ,l

shank portions E of the guard members E ,are journaled, said shankvportions of the guard members passing through apertures in said plate,which register with the bores of the tubular members.V Each of saidguard members has a shoulder E? adapted to rest upon the upper ends ofthe tubular portion D .to support said members. The upperend of eachguard member is curved in hook form, 'as shown clearly-in Fig. 2 ofthedrawings, and when ksaidcurved ends areturned toward each other aslight space intervenes between the same and theyare .then positioned soas to engage the trolley-line in case the trolleyhead hasL a tendency tojump from the .linewire.V Mounted upon the shank portions of theguardmembers which project below' the plate 1a are segmentgears F, -which-`are adapted in their operative movements to have a one-quarter rotarymovement. lPins`or keys 'e are inserted through the .registeringapertures in the shank portions of -said guard membersand segment-gearsand serve as a means to cause the guard members and segmentgears torotate together and also to lock the guard mem bers within theirbearings. A sliding rack H is provided having teethV upon its oppositefaces, which are adapted to IOO ' to the line-wire.

mesh with the teeth of the segment-gears F, as shown clearly in thedetail view of the drawings. Said rack has slots H upon the oppositefaces of the shank portion thereof immediately above the teeth upon' itsfaces, provided to receive the edges of an elongated slot formed in theplate a and upon which the rack is guided in its reciprocal movements.The upper portion of the rack member is formed into a casing F2, whichis adapted to form a housing for a spring K, which is provided for thepurpose of returning the segment-gears and the rack to their normalpositions and also to throw the guard members in to their positions toretain the trolley-head i A bolt K' has one end fixed in a bracketextension a rising from said plate a, and said bolt extends into thehousing or casing F2, and the head 7s of said bolt serves as an abuttingmeans for one end of the spring, while the other end of the spring bearsagainst the inner end of said housing or boxing F2.

Mounted in the ears N, which are integral with the trolley-head, is apin M, upon which a lever O is fulcrumed, one end of said lever beingpivotally connected at to the inner end of said rack-bar, while theother end of the lever O is connected at O to a rope Q, which passesover the sheave Q and is adapted to be positioned within convenientreach of an operator, whereby when it is desired to throw the guardmembers into positions to allow the trolley wheel and head to berelieved from the line-wire the rope may be pulled upon, which willcause the rack-bar to be thrown away from the trolley-wheel and thesegment-gears and the guard mem-bers, which move with them, intopositions in which the hooked ends thereof will be disposed in parallelplanes, thus allowing the trolley-head to be withdrawn from theline-wire without any interference. In order to increase the tensionupon the lever O for the purpose of withdrawing the rack to its normalposition,v

an auxiliary spring P is provided, one end of whichiesecured to theupper portion of the lever O, while its other end is fastened to an eyeP, carried by the trolley-pole.

In order to provide means for automatically throwing the guard membersinto a position to allow the trolley-head to be withdrawn Y from theline-wire in case of the breakage of an earplate bolt or when anyobstruction is met with which would cause damage by coming forciblyagainst the pole or sheave, which would have a tendency to break partsof the apparatus if the guards were in position to engage the line-wire,we provide a trip-lever R, which is pivoted to the trolley head or poleat R', the lower end of which lever R is pivotally connected at R2 toone end of the link R3, which in turn is pivotally connected at R to thelever O. The free end of the lever R normally rests in the positionshown in full lines at a', in which position it is disposed im'-mediately in front of the trolley wheel or shaft and is adapted toreceive the impact of any foreign object against which the lever maycome in contact for the purpose of trip ping the lever into the positionshown in dotted lines, in which position the rack-bar will be actuatedlongitudinally and the segmentgears rotated and the guards thrown intoreleasing positions to allow the trolley and sheave carried thereby toquickly be thrown away from the line-wire in case of an emergency.

In Figs. 6 and 7 of the drawings we have shown a slight modification ofthe apparatus for actuating the guard members, in which drawings theguard members are pivotally mounted in the trolley-head, being heldtherein by means of keys e', and instead of the spring K and housingtherefor we provide a reciprocating slide-block T, which is mounted in adovetailed groove in the trolley-box, said sliding block T beingpivotally connected to the link T, which in turn is pivotally connectedto one end of the lever T2, which is mounted on a pivot-pin in a slot orrecess in the trolley-head. A spring T3 is secured at one end of thelever T2 and has its other end fastened to the trolley-pole, and theobject of the spring is to normally hold the guard members with theircurvedV hooked ends adjacent to each other, or in positions to engageand hold the trolley-head to the line-wire. For throwing the guardmembers for releasing the trolley-head from the line-wire we provide theslotted arms S, which are keyed to the shank portion of the guardmembers and have elongated slots S', in -which a pin W, carried by theslide-block T, has a play, the two arms being given a partial rotarymovement as the slide-block T is reciprocated, as will be readily seen.

The operation of our apparatus will be readily understood and is asfollows: When the trolley-head is desired to be adjusted for being heldto the line-wire, the parts assume the position shown in solid lines inthe drawings, in which the trolley-head is held to the line-wire andprevented from jumping away from the wire, which is a common fault withtrolleys in which no provision ishad for avoiding this trouble. When itis desired for any purpose to allow the trolley-head to be with-V drawn,the operator by pulling upon the rope Q may, through the lever rack-andpinion mechanism, cause the guard members to be thrown so that a freepassage will be afforded between the hooked ends of the guard members,through which the line-wire may readily pass without interference, Incase of any obstruction being upon the wire the trip-lever is normallyin a position so that it will ref ceive the impact against theobstruction bef fore the matter strikes the trolleyfpole or sheave, andas the free end of the lever R IOO IIO

ISO

comes in contact with the obstruction it will be thrown into theposition illustrated in dotted lines, through which rack and segmentconnections the guard members will be quickly thrown open to allow thetrolley-head to be withdrawn from the line-wire without the' breakage ofparts of the apparatus, which would be the case were it not for theprovision of the means described.

While we have shown a particular form of apparatus for operating theguard members and also the tripping mechanism for automatically throwingthe guards open, it will be understood that we may make alterations, ifdesired, in the various details of construction of these partsmentioned, as well as in other features ofthe apparatus, without in anyway departing. from the spirit of the invention.

Having thus described our invention, what we claim as new, and desire tosecure by Letters Patent, is-

1. YA trolley apparatus comprising in combination with a trolley-head,guard members journaled in suitable bearings upon the trolley-head andprovided with hooked ends, segment-gears fixed to said members, arack-bar having teeth in mesh with said gears, a springactuated levermechanism connected to said rack, whereby as the rack is moved in onedirection, the guards are opened, and the reverse direction, closed, asset forth.

2. A trolley mechanism comprising a trolley-head, guard membersjournaled in suitable bearings upon said head, tripping mechanism andmeans intermediate the same and said guard members to automatically openthe guard members, and means for closing the same, as set forth.

3. A trolley apparatus comprising in combination with a trolley-head,guard members journaled in suitable bearings upon the trolley-head andhaving hooked ends normally held in positions to hold the trolley-headfrom jumping from the line-wire, a pivotal trip-lever with its free endpositioned in advance of the trolley-head, and connections between saidlever and the guard members for automatically opening the same to allowthe trolley to be withdrawn from the line-wire, and means for closingthe guard members, as set forth.

4. In combination with atrolley-head, guard members journaled insuitable bearings upon said head and having hooked ends adapted tonormally hold the trolley-head from jumping from the line-wire, apivotally-mounted tripandA having hooked ends normally held to preventthe trolley from jumping from the linewire, segment-gears keyed to theshank portions of said guard members, areciprocal rack having teeth uponits opposite faces which are in mesh with the segment-gears, a leverpivotally mounted upon the trolley-head and having pivotal connectionwith said rack, and spring mechanism for holding the guard membersclosed, asset forth. v

6. A `trolley apparatus comprising in combination with a trolley-head,guard members journaled in suitable bearings thereon, and having hookedends, segment-gears keyed to the shank portions of said members, areciprocal rack-bar having teeth upon its opposite faces in mesh withsaid gears, a housing carried by said rack-bar, a spring mounted in saidhousing, a bolt fixed at one end to the trolley-headand passing intosaid housing, and having a head against which one end of the springbears, a pivotal lever mounted upon the trolley-head and having pivotalconnection with saidy rack, and rope connection with said lever, as setforth.

7. A trolley apparatus comprising in combination with a trolley-head, apole supporting the same, a sheave mounted in said head, guard membersjournaled in the trolley-head having hooked ends adapted to hold saidsheave from jumping from the trolley-line wire, segthe trolley-pole, anda rope passing about said pulley and connected to the end of saidpivotal lever, as set forth.

8. In combination with a trolley head and loo pole supporting the same,a sheave journaled v in said head, guard members journaled in the headhaving hooked ends, segment gearskeyed to the shank portions of Vsaidguards, a reciprocal rack having longitudinal grooves in its oppositefaces adapted to Vreceive the marginal edges of the slot of a plateforming a portion of the trolley-head, and lever mechanism connected tosaid rack-bar for actuating the same, as set forth. Y

In testimony whereof we hereunto affix our signatures in presence ofwitnesses.

PETER DUFF HEAN.

JOHN J. EGAN.

Witnesses:

P. E. AHEARN, FRANK S. PERRIN, HERMAN PAs'rER, FRANK H. WILDEs. f

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